EP 0562120 A4 19940223 -
Publication
Application
Priority
- JP 9201324 W 19921012
- JP 26456191 A 19911014
Abstract (en)
[origin: WO9308499A1] A gradational liquid crystal display panel wherein a transparent first and a second base (1, 5) are so provided in parallel as to face each other with a liquid crystal (7) between, and a transparent common electrode (6) is provided on the inner surface of the second base (5), and further, display pixels arranged in a matrix and thin film transistors (8) formed adjacent to the respective display pixels are provided on the inner surface of the first base (1). A first and a second sub-pixel electrode (41?, 42?) are formed on the top surface of an insulation layer (15) formed on the inner surface of the first base (1), with a gap (GP) between them. A control capacitor electrode (2) is so formed on the under surface of the insulation layer (15) as to cover the gap region (GP) and overlap the sub-pixel electrodes (41?, 42?) in predetermined areas, and thereby, the first sub-pixel electrode (41?), the control capacitor electrode (2) and the second sub-pixel electrode (42?) constitute respectively a first, a second and a third liquid crystal capacitor (CLC1?, CLC2?, CLC3?) together with the common electrode (6) opposed to them. The first sub-pixel electrode (41?) is connected to the control capacitor electrode (2) by a first control capacitor (CC1?), and the control capacitor electrode (2) is connected to the second sub-pixel electrode (42?) by a second control capacitor (CC2?). A drain electrode (8D) of the thin film transistor is connected to the first sub-pixel electrode (41?).
IPC 1-7
IPC 8 full level
G02F 1/1333 (2006.01); G02F 1/1343 (2006.01); G02F 1/136 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01)
CPC (source: EP KR)
G02F 1/134309 (2013.01 - EP); G02F 1/136 (2013.01 - KR); G02F 1/136213 (2013.01 - EP); G02F 1/134336 (2013.01 - EP); G02F 1/134345 (2021.01 - EP); G02F 1/134354 (2021.01 - EP); G02F 2203/30 (2013.01 - EP)
Citation (search report)
- [XP] EP 0493798 A2 19920708 - HONEYWELL INC [US]
- [A] EP 0369621 A2 19900523 - TOSHIBA KK [JP]
- See references of WO 9308499A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9308499 A1 19930429; DE 69223610 D1 19980129; DE 69223610 T2 19980430; EP 0562120 A1 19930929; EP 0562120 A4 19940223; EP 0562120 B1 19971217; JP H05107556 A 19930430; KR 930703625 A 19931130; KR 970005638 B1 19970418
DOCDB simple family (application)
JP 9201324 W 19921012; DE 69223610 T 19921012; EP 92921210 A 19921012; JP 26456191 A 19911014; KR 930701775 A 19930612